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Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
Various examples of aquatic hitchhiking algae that may be found in freshwater aquaria. There are many types of algae that are commonly found in a freshwater aquarium setting. Species may be unintentionally disseminated through spores and fragments that hitchhike on ornamental fish and plants purchased from aquarium suppliers. [1]
This species of algae produces highly toxic extracts that are harmless toward smaller grazers including amphipods and polychaetes yet are capable of killing herbivorous reef fish. Death occurs within 10 hours of the algae's introduction to a well-aerated aquarium during which the fish will attempt to jump out. [18] 8 in (20.3 cm) [19]
Today, algae are used by humans in many ways; for example, as fertilizers, soil conditioners, and livestock feed. [124] Aquatic and microscopic species are cultured in clear tanks or ponds and are either harvested or used to treat effluents pumped through the ponds. Algaculture on a large scale is an important type of aquaculture in some places.
The list of families in the Fucales, as well as additional taxonomic information on algae, is publicly accessible at Algaebase. [1] The class Phaeophyceae is included within the division Heterokontophyta. [2] This name comes from the Greek word phaios meaning "brown" and phyton meaning plant. [3]
Some species of green algae, particularly of genera Trebouxia of the class Trebouxiophyceae and Trentepohlia (class Ulvophyceae), can be found in symbiotic associations with fungi to form lichens. In general the fungal species that partner in lichens cannot live on their own, while the algal species is often found living in nature without the ...
Seaweed species such as kelps provide essential nursery habitat for fisheries and other marine species and thus protect food sources; other species, such as planktonic algae, play a vital role in capturing carbon and producing at least 50% of Earth's oxygen. [3] Natural seaweed ecosystems are sometimes under threat from human activity.
Periphyton can contain species of cyanobacteria that are toxic to humans and other animals. [1] In fresh water, excessive growth and subsequent death and decay of periphyton can have undesirable effects: depleting oxygen in the water, altering its pH, and clogging the space between gravel and sand (the hyporheic zone).